SimpleX Chat vs United CHAT

SimpleX - the first messaging network without user identifiers of any kind (not even random numbers) - 100% private by design! Security assessments by Trail of Bits: 2022: https://simplex.chat/blog/20221108-simplex-chat-v4.2-security-audit-new-website.html 2024: https://simplex.chat/blog/20241014-simplex-network-v6-1-security-review-better-calls-user-experience.html SimpleX Chat features: - quantum resistant end-to-end encrypted messages, with editing, replies and deletion. - disappearing messages with opt-out per contact/group. - message reactions. - delivery receipts, with opt-out per contact or group. - multiple chat profiles, with hidden profiles. - app access and self-destruct passcodes. - incognito mode - unique to SimpleX Chat. - end-to-end encrypted images and files. - voice messages up to 5 minutes – also end-to-end encrypted. - "live" messages – they update for all recipients as you type them, every few seconds - unique to SimpleX Chat. - connect via one-time invitation links or via long-term public addresses. - secret chat groups - only group members know the group exists and who is the member. - end-to-end encrypted audio and video calls. - connection security code verification, for contacts and group members – to protect from man-in-the-middle attacks (e.g. invitation link substitution). - end-to-end encrypted push notifications (they contain only encrypted meta-data, not the actual content). - encrypted portable chat database - you can transfer your chat contacts and history to another device. - all local files and media are encrypted by default. - animated images and "stickers" (e.g., from GIF and PNG files and from 3rd party keyboards). SimpleX Chat advantages: - privacy of your identity, profile, contacts and metadata: unlike any other existing messaging platform, SimpleX uses no phone numbers or any other identifiers assigned to the users - not even random numbers. This protects the privacy of who you are communicating with, hiding it from SimpleX platform servers and from any observers. - complete protection against spam and abuse: as you have no identifier on SimpleX platform, you cannot be contacted unless you share a one-time invitation link or an optional temporary user address. - full ownership, control and security of your data: SimpleX stores all user data on client devices, the messages are only held temporarily on SimpleX relay servers until they are received. - decentralized proxied peer-to-peer network: you can use SimpleX Chat via your own relay servers and still communicate with people using pre-configured or any other SimpleX relay servers. - fully open-source code. You can connect to anybody you know via link or scan QR code (in the video call or in person) and start sending messages instantly - no emails, phone numbers or passwords needed. Your profile and contacts are only stored in the app on your device - relay servers do not have access to this information. All messages are end-to-end encrypted using open-source quantum resistant double-ratchet protocol; the messages are delivered via relay servers using open-source SimpleX Messaging Protocol. Please send us any questions via the app (connect to the team via the app settings!), email chat@simplex.chat or submit issues on GitHub (https://github.com/simplex-chat/simplex-chat/issues) Ream more about SimpleX Chat at https://simplex.chat Get source code in our GitHub repo: https://github.com/simplex-chat/simplex-chat Follow us on X/Twitter (@SimpleXChat), Reddit (r/SimpleXChat/) and Mastodon (https://mastodon.social/@simplex) for the latest updates.

United CHAT is a messenger built for people who take privacy seriously - not as a marketing word, but as the way the app is engineered from the ground up. No phone number. No email. No username stored on our servers. The network that carries your messages has no idea who you are. HOW YOUR MESSAGES ARE PROTECTED - Two layers of encryption. Every message is end-to-end encrypted in transit; your photos, videos, voice notes and documents are then encrypted a SECOND time, at rest on your device, with a separate cipher. - End-to-end encryption on the SimpleX protocol - a modern Double Ratchet design with post-quantum key exchange. Only you and the person you're talking to can read anything. - No user identifiers in transport. There is no account directory to leak, and no social graph to seize. - Optional Tor routing - keep your IP address away from the relay. - Per-contact security codes - verify in person that no one is sitting in the middle of your conversation. TRANSLATION & VOICE THAT STAY ON YOUR PHONE - Live conversation translation, on-device (iOS 18 or later). Write in your language; your contact reads every message in theirs - and the other way around. The translation runs entirely on your phone, so the text is NEVER sent to a translation server. 11 languages: Polish, English, German, French, Spanish, Italian, Dutch, Romanian, Ukrainian, Russian and Turkish. - Masked voice notes. Record a voice message and have it pitch-shifted on your own device before it's sent - your real voice never leaves the phone. HOW YOUR PHONE IS PROTECTED - App lock with an 8-digit passcode, plus an optional high-security mode that keeps your database key behind Face ID / Touch ID. - Duress code. A separate 12-digit emergency code typed on the lock screen instantly wipes everything, on the spot, with no network needed. - Optional server-assisted key. When you turn it on, your database key is split between your device and our server, so a stolen phone in airplane mode is just ciphertext. - Remote wipe from any browser (with the server-assisted key on). Lost your phone? Enter your wipe identifier and wipe password on a web page and your data is invalidated within minutes - even if the phone is offline. - Optional dead-man switch (with the server-assisted key on). Choose an inactivity window (7, 14, 30 or 90 days). If you don't unlock the app in time, the key is destroyed and the data becomes permanently unreadable. - Screen-capture shield. While the screen is being recorded or mirrored, conversations are hidden. - Screenshot alerts. If someone takes a screenshot inside a conversation, the other person is notified. WHAT'S ON YOUR DEVICE STAYS YOURS - Photos, videos, voice messages and PDF documents are encrypted at rest on the device - a private vault that opens only for you. - View-once media for the moments that shouldn't stick around. - Metadata minimization by design: no IP logs, no contact graph on the server, and display names never leave your phone. SUBSCRIPTION United CHAT requires an auto-renewable subscription: monthly or yearly. New subscribers get a 3-day free trial. Payment is charged to your Apple Account when the trial ends, or at purchase if you are not eligible for a trial. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel it anytime in your Apple Account settings. Terms of Use: https://chat.unitedai.app/terms/ Privacy Policy: https://chat.unitedai.app/wipe/privacy.html BEING HONEST WITH YOU No app can promise you're invisible, and we won't pretend otherwise. What we can promise is a design that minimizes what anyone - including us - can ever know, and gives you real controls to protect and destroy your own data. United CHAT. Privacy you can actually operate.